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Goniometer Stages![]()
GN1 Single-Axis, 1" to Point of Rotation GNL10 Single-Axis, 1" to Point of Rotation GN05 Single-Axis, 1/2" to Point of Rotation GNL18 Single-Axis, 1.75" to Point of Rotation GNL20 Dual-Axis, 1" to Point of Rotation GN2 Dual-Axis, 1/2" to Point of Rotation ![]() Please Wait
The GN2(/M) and GNL20(/M) Dual-Axis Goniometers consist of two stacked stages that share a fixed point of rotation above the top platform.
![]() All Goniometers Feature a Fixed Point of Rotation Above the Stage Platform Features
A goniometer or goniometric stage is a device used to rotate an object precisely, within a small angular range, about a fixed point in space. Goniometers are similar to linear stages, but, rather than providing linear movement, the stage partially rotates about a fixed point above the mounting surface of the stage. In our two product lines, the distance from the point of rotation to the mounting surface was designed so that two different goniometer models may be stacked in an XY configuration and both stages will rotate about the same point. Our goniometers use a backlash-free leadscrew in the smaller GN series and a precision micrometer for enhanced angular positioning of the top plate in the larger GNL series. Our goniometers offer unobstructed, pure rotational motion about their point of rotation over the angle of rotation (see image to the right). The compact, stackable design allows one model to be fastened to the top plate of another aligning their points of rotation. In the GN series, the GN05(/M) mounts atop the GN1(/M). In the GNL series, the GNL10(/M) mounts atop the GNL18(/M). These two axis stage setups can be purchased as a single package [GN2(/M) or GNL20(/M) respectively]. The precision dovetail design, accompanied by a backlash-free lead screw and a vernier scale, provides accurate and repeatable positioning. A side mounted setscrew can be used to lock the platform in position. The GN series goniometers provide an array of four 2-56, four 4-40 (M2.5 x 0.45), and eight 6-32 (M3 x 0.5) taps for mounting. This series can be either post mounted via an 8-32 (M4) tap or mounted to an MS12B(/M) Mini-Series breadboard via the #4 (M3) slotted mounting holes on the base plate. Alternatively, the GNL series offers twelve 4-40 (M2.5 x 0.45) and sixteen 6-32 (M4 x 0.7) taps. See below or the Specs tab for mounting hole position. Our PM3(/M) and PM4(/M) clamping arms feature 6-32 (M4) threads, allowing them to be attached to most goniometers. This series can be mounted onto a standard breadboard or Mini-Series breadboard with 1/4"-20 (M6) taps via the 1/4" (M6) slotted mounting holes on the base plate. Note: Prior to mounting components onto the goniometers, please review our standard support documentation, which can be accessed by clicking the red Docs icon ( We do not recommend attempting to remove the base plate from the goniometer. Doing so may compromise the precise adjustment achieved with the stage, which will then require recalibration or readjusting. Single-Axis Goniometers
Dual-Axis Goniometers
![]() Click for Details GNL Series Mounting Options ![]() Click for Details GN Series Mounting Options
![]() ![]() Click to Enlarge Small Platform Goniometer Dimensions ![]() Click for Details Mounting Options
![]() ![]() Click to Enlarge Large Platform Goniometer Dimensions ![]() Click for Details Mounting Options
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